Metallic structure.



No.745,570. I PATENTED DEC! 1, 1903.

W. H. CLARKE.

METALLIC STRUCTURE.

APPLIGATION FILED APR. 16, 1903.

N0 MODEL.

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UNITED STATES I Patented December 1, 1903;.

PATENT OFFICE.

METALLIC STRUCTURE.

SPECIFICATION forming part r Letters Patent No. 745,570, dated December1, 1903. Application filed April 16, 1903. Serial No. 152.868. (Nomodel.)

To all whom it may concern.-

Be it known that I, WILLIAM H. CLARKE, a citizen of the United States,residing at Washington, in the District of Columbia, have inventedcertain new and useful Improvements in Metallic Structures, of which thefollowing is a specification.

This invention relates to metallic structures such as are employedin'the construction of wagontongues, whiffietrees, neckyokes,telegraph-poles,fence-posts,piles, fishing-rods, canes, umbrellas, andother articles of a similar nature.

The invention has for its object the provision of a structure which isstrong, rigid, light, durable, and inexpensive in construction andadapted to be easily manufactured and assembled.

Other objects and advantages of the invention will be apparent from thefollowing detail description, and its novel features will be defined bythe claims.

In the accompanying drawings, forming a part of this specification,Figure 1 illustrates in cross-section a metallic structure made according to my invention. Figs. 2, 3, 4, 5, 6, and 7 illustratemodifications, and Fig. 8 illustrates in perspective a structure madeaccording to my invention.

Like reference-numerals indicate like parts in the difierent figures ofthe drawings.

The metallic structure of my invention is preferably made in two parts 1and 2, which are assembled and held together by crossrods 3 or othersuitable fastening means. Each part of the structure is preferably madefrom sheet metal,which is bent into the proper shape by any suitablemeans. As will be seen from the drawings, each part of the structure isapproximately channel-shaped, being either of concave, square, or anyother desired form in cross-section, and is provided on one side with awing 4, which is angular in cross-section and is bent down andterminates adjacent to the lowermost portion of the channel-shaped partat the point indicated by reference character 5, and on the other sidewith a similar angular wing 6, which is bent in anopposite direction tothe wing 4 and terminates adjacent to the channel portion of the otherpart of the structure at the point indicated by the reference-numeral 7,as shown in Fig. 1 of the drawings. It will be seen that when the partsor sections 1 and 2 are fitted together, as shown, the angular wing 6 ofone section lies in parallel proximity to the angular Wing 4 of theother section.

In Fig. 2 of the drawings I have illustrated a modified constructionwherein but one angular wing 43 is provided oneach of the parts orsections.

According to the construction illustrated in Fig. 3, the angular wings4* on each part 1 2 are bent in parallel relation to each other at theportions 4:, as shown.

The construction illustrated in Fig. 4 is similar to that ofFig. 1except that the parts 1 2 are corrugated to produce greater rigidity andstrength, and the construction illustrated in Fig. 5 is also similar tothat of Fig. 1 except that the parts are shaped to form a squarestructure when assembled.

It will be understood, of course, that the structures illustrated in theother figures may also be corrugated or squared, if desired.

In Figs. 6 and 7 the wings i instead of being bent atapproximate rightangles, as in the other figures, are bent at acute angles, as

shown, so as to brace the structure in all div rections.

While it is preferable to form each of the parts 1 2 from sheet-metalblanks bent to the proper shape, it will be understood, of course, thatthey may be produced in other ways such, for example, as bycastingwithout departing from the spirit of my invention. It

will also be understood that the parts of the structure may be solderedtogether or held in assembled position by other means than thecross-rods described, if desired.

The structure which Ihave devised is adapted for use in the manufactureof whiffietrees, neckyokes, metallic telegraph-poles, metallic piles,fishing-rods, canes, umbrellas, electric conduits, multiple pipes, (he.Furthermore, the nature of my invention is such that changes in theprecise details of construction illustrated and described may be madewith out departing'from the spirit of the invention, and I therefore donot desire to be limited in any manner except as defined by thefollowing claims.

By having the angular wings of the parts 1 and 2 terminate adjacent tothe inner walls of the assembled structure the whole structure is bracedand rendered rigid, strong, and durable.

While I have described my invention in connection with a metallicstructure, it will be apparent that I may also construct nonstructure,said wings contacting with each other adjacent to the center of saidstructure.

2. As a new article of manufacture, a structure made in two parts, eachpart having a plurality of inwardly-extending Wings terminating adjacentto the inner wall of said structure, said wings contacting with eachother adjacent to the center of said structure.

3. As a new article of manufacture, a structure made in two parts, eachpart having a plurality of inwardly and oppositely extending wingsterminating adjacent to the inner Wall of said structure.

4. As a new article of manufacture, a structure comprising a pluralityof assembled parts, each part being channel-shaped and having an angularwing extending from each of its sides and being disposed over thechannel portion thereof, said wings extending in opposite directions andterminating adjacent to the inner wall of the assembled structure.

5. As a new article of manufacture, a structure comprising a pluralityof assembled parts, each part being channel-shaped and corrugated andhaving an angular Wing disposed over the channel portion thereof.

In testimony whereof I affix my signature in presence of twowitnesses.

WILLIAM H. CLARKE.

Witnesses:

R. M. ELLIOTT, M. J. WARRINER.

